Make incremental and partial configurable

[Gby56]

Fixes #48 and helps with #45

[Gby56]

@tjarrettveracode I was reading the veracode docs and the partial/incremental parameters are so confusing... it sounds like it does the same thing ? If I send the whole list, plus or minus a few people everytime, it won't matter ?

In both cases it sounds that you can delete some objects if you only send 1 and forget to send the whole thing, so they clearly have a similar functionality I think ?

Note: You must set incremental=true or the command overwrites the list of users instead of adding them to the specified team.

Note: You must set partial=true or the command overwrites all existing business units.

[tjarrettveracode]

@Gby56 , this is a little more complicated and I'm going to need some time to test it and review it.

[Gby56]

@tjarrettveracode In the meantime though... my change is not changing the current behavior, given the default values I pass, both are True like you hardcoded. So imo it's mostly documentation work ?

[Gby56]

@tjarrettveracode If you could merge this, it would really help out, I think it's worth making the client quite flexible on these undocumented parameters. I haven't changed the default behavior, so it's safe for the current users to keep using the client, but it lets power users use it more